CN1643606B - Tape recording apparatus, control unit and control method - Google Patents
Tape recording apparatus, control unit and control method Download PDFInfo
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- CN1643606B CN1643606B CN038074796A CN03807479A CN1643606B CN 1643606 B CN1643606 B CN 1643606B CN 038074796 A CN038074796 A CN 038074796A CN 03807479 A CN03807479 A CN 03807479A CN 1643606 B CN1643606 B CN 1643606B
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1201—Formatting, e.g. arrangement of data block or words on the record carriers on tapes
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/36—Monitoring, i.e. supervising the progress of recording or reproducing
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Selective Calling Equipment (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
A tape storage device which disregards a fault in recording of data on a tape recording medium is provided. The tape storage device which sequentially records data, is characterized by including: a recording section which records a data freshness degree on a tape recording medium, in association with new data to be newly recorded, the data freshness degree being information indicating how new the new data is with respect to already-recorded old data; a determining section which determines whether or not a fault occurs in recording on the tape recording medium performed by the recording section; a reading section which reads a faulty portion freshness degree when it is determined that the fault occurs, the faulty portion freshness degree being the data freshness degree of a faulty portion on the tape recording medium; and a skip recording section which allows the recording section to record a data freshness degree higher than the faulty portion freshness degree, immediately before the faulty portion.
Description
Technical field
The present invention relates to a kind of fc tape storage device FC, control unit, control method, program and recording medium.More particularly, the present invention relates to a kind ofly can ignore fc tape storage device FC, control unit, control method, program and the recording medium that writes error.
Background technology
Proposed on magnetic tape recording medium, to write down as the new data of representing to write down with respect to the data freshness of the information of the freshness of the legacy data that has write down and the fc tape storage device FC that the data freshness is associated with new data.These fc tape storage device FC executive loggings are so that the data freshness is according to the position on the tape and dull non-decreasing.
In above-mentioned fc tape storage device FC, when error that the data freshness that takes place to write is made mistakes, scan whole magnetic tape recording medium so that specify the maximum of the data freshness that is associated with the legacy data that has write down, write down the data freshness higher explicitly with new data then than described maximum.But it is very consuming time that fc tape storage device FC scans the operation of whole magnetic tape recording medium.
Therefore, the purpose of this invention is to provide a kind of fc tape storage device FC that can address the above problem, control unit, control method, program and recording medium.This purpose realizes by the characteristics combination that independent claims limited in claims.In addition, dependent claims has been described further favourable instantiation of the present invention.
Summary of the invention
Specifically, according to first pattern of the present invention, a kind of fc tape storage device FC of journal data is provided, it is characterized in that comprising: recording section, the new data that is used for and will new record is explicitly in magnetic tape recording medium identifying recording layer freshness, and the data freshness has how new information for the expression new data with respect to the legacy data that has write down; Judge part, be used for judging whether the record on magnetic tape recording medium that recording section is carried out slips up; Reading section is used for reading error part freshness when taking place to slip up when judging, described error part freshness is the error partial data freshness on the magnetic tape recording medium; And the jump recording section, be used to make recording section to be right after the error part higher data freshness of record ratio error part freshness before.First pattern of the present invention also provides a kind of control unit, controls control method, the program of these equipment and unit and the recording medium of storing this program.
In addition, according to second pattern of the present invention, a kind of fc tape storage device FC of journal data is provided, it is characterized in that comprising: recording section, the new data that is used for and will new record is explicitly in magnetic tape recording medium identifying recording layer freshness, and the data freshness has how new information for the expression new data with respect to the legacy data that has write down; Judge part, be used for judging whether the record on magnetic tape recording medium that recording section is carried out slips up; And the jump recording section, being used for making value of recording section records when judging when taking place to slip up, this value shows that the error at magnetic tape recording medium partly keeps old invalid data.Second pattern of the present invention also provides a kind of control unit, controls control method, the program of these equipment and unit and the recording medium of storing this program.
Should be noted that all technical characterictics of the present invention are not listed in above-mentioned summary of the present invention, and the sub-portfolio of these technical characterictics is also contained among the present invention.
Description of drawings
Fig. 1 is the schematic block diagram of fc tape storage device FC 10.
Fig. 2 is the functional-block diagram of fc tape storage device FC 10.
Fig. 3 illustrates the data instance by recording section 210 records.
Fig. 4 illustrates the example of fc tape storage device FC 10 recorded data freshness when in record error taking place.
Fig. 5 is the flow chart about fc tape storage device FC 10.
Fig. 6 is the flow chart about the fc tape storage device FC 10 in first change.
Fig. 7 is the functional-block diagram of the fc tape storage device FC 10 in second change.
Fig. 8 is the flow chart about the fc tape storage device FC 10 in second change.
Fig. 9 illustrates the hardware configuration example of the fc tape storage device FC 10 of any embodiment and corrigendum according to the present invention.
Embodiment
Describe the present invention in detail below by embodiments of the invention.But the embodiments described herein does not attempt to limit the present invention defined in claims, and all combinations of the technical characterictic of describing in an embodiment are not requisite for solution of the present invention.
Fig. 1 is the schematic block diagram of fc tape storage device FC 10.Fc tape storage device FC 10 is connected to the external world by network.The network that network is to use for example IDE, scsi interface, USB, optical-fibre channel etc. to connect as I/O.Can load tape storage medium 80 in the fc tape storage device FC 10.Fc tape storage device FC 10 loads tape storage medium 80 and reads and record data.Fc tape storage device FC 10 is for example based on the tape drive of LTO (Linear Tape Open hereinafter is called LTO) standard.Tape storage medium 80 is for example based on the magnetic tape recording medium of LTO standard.Should be noted that the LTO standard is the open specification of being developed jointly by Hewlett-Packard, IBM, Seagate three companies.
Fc tape storage device FC 10 overrides the data that are recorded on the tape storage medium 80.Fc tape storage device FC 10 obtains the freshness storage area from writing of tape storage medium 80 configuration and writes the data freshness as the data freshness of using in the data record.Use this to write the data freshness, fc tape storage device FC 10 tape storage medium 80 identifying recording layer freshness as expression will new record new data with respect to the information of the freshness of the legacy data that has write down, this data freshness is associated with new data.When in the record on tape storage medium 80 error taking place, fc tape storage device FC 10 is skipped the error part and is continued record.By this way, fc tape storage device FC 10 can record data, and the error part and the new data of the data that maintenance write down are separated.
When judging that according to the fc tape storage device FC 10 of present embodiment it is wrong overriding the data freshness that will use in the record, fc tape storage device FC 10 can make the error part and the new data of the data that maintenance write down separate.The error part that is to say that when in the record on tape storage medium 80 error taking place, fc tape storage device FC 10 is executive logging on tape storage medium 80, so that can be distinguished.
Fig. 2 is the functional-block diagram of fc tape storage device FC 10.Fc tape storage device FC 10 comprises magnetic tape drive unit 20 and control unit 30.Magnetic tape drive unit 20 has the part of obtaining 200, recording section 210 and reading section 220.In Fig. 2, tape storage medium 80 is installed in the magnetic tape drive unit 20.Tape storage medium 80 has the freshness of writing storage area 85.Write freshness storage area 85 storage and write the data freshness as the data freshness of use during writing.In addition, write the 85 storage conducts of freshness storage area and write the data freshness at the copy of the copy that writes the data freshness of usefulness.In other words, write freshness storage area 85 redundant storage and write the data freshness.Should be noted that writing freshness storage area 85 for example is non-volatile recording medium.For example, writing freshness storage area 85 can be flash memory or SRAM.
Initialization operation when tape storage medium 80 is installed obtains part 200 and obtains and write the data freshness and copy writes the data freshness from writing freshness storage area 85.Obtaining part 200 then will write data freshness and copy and write the data freshness and send to and write greenness determination part 300.In addition, obtaining part 200 will write the data freshness and send to recording section 210.
Should be noted that although the top initialization operation that obtains part 200 when tape storage medium 80 is installed of having described, the time of this operation is when being not limited to tape storage medium 80 is installed.For example, can be when activating fc tape storage device FC 10, when resetting whole fc tape storage device FC 10, when connecting the power supply of fc tape storage device FC 10, perhaps when the opening entry new data set, carry out this operation.
In addition, with data record to magnetic tape recording medium the time, obtain the operation of part 200 below carrying out at each recording section 210.Obtain part 200 and receive the data freshness from recording section 210.Obtain part 200 then and duplicate this data freshness.Obtain part 200 and data freshness and copy thereof are recorded write in the freshness storage area 85, respectively as writing the data freshness and copy writes the data freshness.Here, the data freshness for example is based on WP (Write Pass, the write by) information of LTO standard.
In addition, reading section 220 receives data-recording status from recording section 210.Reading section 220 is analyzed data-recording status then, and judge thus recording section 210 whether write down will journal final data.When recording section 210 write down will journal final data the time, reading section 220 reads the latter end freshness as the data freshness of presumptive area before the position of record current data on the tape storage medium 80.Reading section 220 sends to jump recording section 320 with this latter end freshness then.Here, the presumptive area before the position of record data is to continue to search for the zone of higher data freshness therein, this be because at fc tape storage device FC 10 after tape storage medium 80 reads the data of last record, still might have new data.
Initialization operation when tape storage medium 80 is installed writes greenness determination part 300 and receives and write the data freshness and copy writes the data freshness from obtaining part 200.Write greenness determination part 300 and write the data freshness, judge whether write the data freshness is wrong by relatively writing data freshness and copy.When writing data freshness and copy and write the data freshness and differ from one another, write greenness determination part 300 and judge that to write the data freshness be wrong and will write the freshness error notification and send in reading section 220 and the jump recording section 320 each.In this embodiment, when writing data freshness and its copy and write the data freshness and differ from one another, write greenness determination part 300 and judge that it is wrong writing the data freshness.But, judge that the method that writes data freshness mistake is not limited only to previous embodiment.For example, even after tape storage medium 80 is installed, can not obtain when writing the data freshness, write greenness determination part 300 and can judge and write data freshness mistake.
Judge that part 310 receives data-recording status from recording section 210.Judge that then part 310 analyzes data-recording status, and judge thus in the record on tape storage medium 80 that recording section 210 carries out and whether slip up.When in the record that judgement part 310 is judged on tape storage medium 80 error taking place, judgement part 310 will be slipped up and be notified each that sends in reading section 220 and the jump recording section 320.
Jump recording section 320 writes the freshness error notification from writing 300 receptions of greenness determination part.In addition, jump recording section 320 receives the error notice from judging part 310.When 320 receptions of jump recording section write the freshness error notification and receive the error notice, the recording section 320 that jumps then was from reading section 220 reception error part freshness.Afterwards, jump recording section 320 receives data-recording status from recording section 210.Jump recording section 320 is analyzed this data-recording status, and is right after the data freshness that writes down before the error part before specifying in the error generation thus.Then, jump recording section 320 judges whether be right after the data freshness that writes down before the error part is higher than error part freshness.When jump recording section 320 judge being right after the error part before the data freshness of record when being higher than error part freshness, jump recording section 320 keeps without change and is right after the data freshness that writes down before the error part.When jump recording section 320 judged that being right after the data freshness that writes down before the error part is not higher than error part freshness, jump recording section 320 sent the data freshness conduct higher than error part freshness to recording section 210 and writes the data freshness.
Then, jump recording section 320 to recording section 210 send be equal to or higher than being right after the error part before the data freshness of data freshness of record, and make recording section 210 be right after the data freshness that record is sent before the error part.By this way, jump recording section 320 can make recording section 210 be right after the error part high data freshness of record ratio error part freshness before.Therefore, jump recording section 320 can make in the part after data and the data freshness recording occurring continuously error part on tape storage medium 80.
In addition, when jump recording section 320 when reading section 220 receives the latter end freshness, jump recording section 320 sends to recording section 210 as writing the data freshness with the data freshness higher than latter end freshness.Jumping recording section 320 then will be than the high data freshness ground associated with the data record of data freshness of presumptive area before the writing position of final data.By this way, jump recording section 320 can write down new valid data, and make its with data in the end before the legacy data that write down distinguish.
Should be noted that although the top initialization operation of having described jump recording section 320 when tape storage medium 80 is installed, the time of this operation is when being not limited to tape storage medium 80 is installed.For example, can be when activating fc tape storage device FC 10, when resetting whole fc tape storage device FC 10, when connecting the power supply of fc tape storage device FC 10, perhaps when the opening entry new data set, carry out this operation.
Fig. 3 illustrates the data instance by recording section 210 records.Trunnion axis is represented the position on the tape.Fig. 3 illustrates first data 500, the first data freshness 505, isolates symbol 510, second data 520 and the second data freshness, 525 orders record on tape.Recording section 210 on tape storage medium 80, write down will new record as expression new data with respect to the data freshness of the information of the freshness of the legacy data that has write down, and this data freshness is associated with new data.For example, in Fig. 3, recording section 210 records are as 16 systems several 100 of the first data freshness 505 that is associated with first data 500.After record first data 500 and the first data freshness 505, recording section 210 record sheets show the isolation symbol 510 of the boundary between the data set.Then, 210 records are as 16 systems several 200 of the second data freshness 525 that is associated with second data 520.Afterwards, recording section 210 continues record data and data freshness similarly, till finishing the data that will write down, perhaps uses until exhausted up to tape storage medium 80.
As mentioned above, recording section 210 journal data freshness are so that the data freshness is according to position on tape and dull non-decreasing.That is to say that recording section 210 can record data and data freshness, so that the data freshness that is associated with new data that will new record becomes than the data freshness height that is associated with the legacy data that has write down.
Fig. 4 illustrates the example of fc tape storage device FC 10 recorded data freshness when in record error taking place.Vertical axis representative data freshness.Fig. 4 illustrate fc tape storage device FC 10 at first record data and data freshness, then in the example of carrying out on the same position of the tape of having carried out aforementioned record under the situation that overrides record.At first, shown in first figure 700, fc tape storage device FC 10 journal data freshness.For example, in the part that error (1) takes place, fc tape storage device FC 10 is skipped the error part and is continued and carries out record in the part of error part front.Therefore, in the part that error (1) takes place, fc tape storage device FC 10 retention data freshness are as having write down before the data freshness shown in record first figure 700.Therefore, when record data, fc tape storage device FC 10 can be discerned legacy data and be stored in the part that error (1) takes place.After storing the data freshness shown in first figure 700, what write freshness storage area 85 storing values (a) writes the data freshness, and it is the peaked data freshness that is equal to or higher than first figure 700.Fc tape storage device FC 10 use value (a) in next write operation is represented writes the data freshness.
Then, fc tape storage device FC 10 is carried out on the same position of the tape of having carried out above-mentioned record and is override record.
In the example shown in this figure, suppose that writing freshness storage area 85 has stored the value (b) that writes the data freshness as mistake.That is to say, suppose because the data freshness shown in recording section 210 records first figure 700 will be stored in the value that writes the data freshness that writes in the freshness storage area 85 and change.Fc tape storage device FC 10 overrides record by carrying out on the data freshness shown in first figure 700, the data freshness shown in the record second graph 710.In the part that error (2) takes place, fc tape storage device FC 10 is skipped the part of error (2) generation and is proceeded record.But, if fc tape storage device FC 10 is skipped the part that error (2) takes place simply and is proceeded record, the correct record data freshness of fc tape storage device FC 10 then.That is to say that the data freshness (for example first figure 700) that has been recorded in the data on the magnetic tape recording medium will be higher than the data freshness of new data.Therefore, if the mode of the part of record data continues to write down new data to skip, then the data freshness of the data that will write down after skip operations can be lower than the partial data freshness of skipping owing to the generation of error.As a result, after reading skip operations the record new data the time can be counted as legacy data.
Therefore, in this embodiment, fc tape storage device FC 10 is right after before the part of error (2) generation, and the high data freshness of partial data freshness that record takes place than error (2) is shown in the example among Fig. 4.Use the data freshness of this new record, fc tape storage device FC 10 is skipped the part of error (2) generation and is proceeded record.
As mentioned above, be wrong even write the data freshness, fc tape storage device FC 10 is correct record data freshness also, so that distinguish between data that write down and new data.
Fig. 5 is the flow chart about fc tape storage device FC 10.Write greenness determination part 300 and judge whether write the data freshness is wrong (S410).(S410, not), fc tape storage device FC 10 is carried out normal write operations (S420) when to write the data freshness be not wrong.
When judgement when to write the data freshness be wrong (S410 is), the operation below fc tape storage device FC 10 repeats.Recording section 210 record data and the data freshness (S430) that is associated with these data.More particularly, recording section 210 uses and will be confirmed as the wrong initial value of data freshness as the data freshness that write.Alternatively, recording section 210 can use copy to write the data freshness.Recording section 210 journal data freshness then are so that the data freshness is based on the dull non-decreasing in the position on the tape.Should be noted that recording section 210 can use the initial value of predetermined value as the data freshness.Then, reading section 220 judges whether finished the data (S435) that will write.When judging (S435 is) when having finished the data that will write, reading section 220 is read the data freshness of presumptive area before the writing position of final data.The recording section 320 that jumps then writes down explicitly with final data and compares the high data freshness (S437) of data freshness of being read.
(S435, not), judgement part 310 is not judged whether slip up (S440) in the record of data when judgement is also finished the data that will write.When in the record of judging in data error taking place (S440 is), reading section 220 reads error part freshness (S450).Then, judge that part 310 judgements are right after error part data freshness before and whether are higher than error part freshness (S460).Data freshness before judgement is right after the error part is not higher than error part freshness, and (S460, in the time of not), record was than the high data freshness (S470) of error part freshness before jump recording section 320 was right after the error part.
By this way, when in data record, error taking place, be wrong even write the data freshness, fc tape storage device FC 10 can be ignored the error part and proceed record.
Fig. 6 is the flow chart about the fc tape storage device FC 10 in first change.Functional-block diagram according to the functional-block diagram of the fc tape storage device FC 10 of first change and fc tape storage device FC 10 shown in Figure 2 is similar.In addition, except judging part 310, seemingly according to the function class of the function of the fc tape storage device FC 10 of first change and fc tape storage device FC 10 shown in Figure 2.Therefore, will in Fig. 6, describe the function of judging part 310 in detail.Therefore class of operation among operation among step S510 in the figure, S520, S530, S535, S537, S540, S550 and the S560 and S410 shown in Figure 5, S420, S430, S435, S437, S440, S450 and the S460 seemingly omits its detailed description.
(S560 when judging that part 310 judges that being right after error part data freshness before is not higher than error part freshness,), do not slipping up partial record than the low data freshness (S570) of data freshness of record before being right after the error part according to the jump recording section 320 of this change.By this way, when decision procedure was slipped up, jump recording section 320 can make according to error part freshness and show that data are able to record with the data freshness that is written except that the error part.Therefore, fc tape storage device FC 10 can be ignored the error part by extra executive logging on slipping up partly, and unit needs the tape backrush to the part that is right after before slipping up partly.
Fig. 7 is the functional-block diagram of the fc tape storage device FC 10 in second change.Fc tape storage device FC 10 according to this change comprises magnetic tape drive unit 20 and control unit 30.Magnetic tape drive unit 20 has part of obtaining 230 and recording section 240.Control unit 30 has the greenness determination of writing part 330, judges part 340 and jump recording section 350.Tape storage medium 80 and write freshness storage area 85 similar with shown in Fig. 2.In addition, the operation of obtaining part 230 is identical with the operation of obtaining part 200 among Fig. 2 basically, and therefore the descriptions thereof are omitted at this.
Recording section 240 receives and writes the data freshness from obtaining part 230 and jump recording section 350.When recording section 240 receives when writing the data freshness from jump recording section 350, recording section 240 uses this to write the operation of data freshness executive logging.When recording section 240 is not received when writing the data freshness from jump recording section 350, recording section 240 uses from what obtain that part 230 receives and writes the operation of data freshness executive logging.Recording section 240 ground associated with the data any these of record on tape storage medium 80 write the data freshness.In addition, recording section 240 sends to each that judge in part 340 and the jump recording section 350 with data-recording status (whether success of record, whether finished the data that will write down, or the like).
Initialization operation during as installation tape storage medium 80 writes greenness determination part 330 and writes the data freshness from obtaining part 230 receptions.Write greenness determination part 330 and judge whether write the data freshness is wrong.Judge when writing data freshness mistake when writing greenness determination part 330, write greenness determination part 330 and will write the freshness error notification and send to jump recording section 350.
Judge that part 340 receives data-recording status from recording section 240.Judge that then part 340 analyzes these data-recording status, and judge thus in the record on tape storage medium 80 that recording section 240 carries out and whether slip up.When in the record that judgement part 340 is judged on tape storage medium 80 error taking place, judgement part 340 will be slipped up to notify and be sent to jump recording section 350.
Jump recording section 350 writes the freshness error notification from writing 330 receptions of greenness determination part.In addition, jump recording section 350 receives the error notice from judging part 340.When 350 receptions of jump recording section write the freshness error notification and receive the error notice, jump recording section 350 was from recording section 240 reception data-recording status.Jump recording section 350 is analyzed this data-recording status, and specifies the data freshness that is right after the error partial record thus.The recording section 350 that jumps then writes the data freshness to the recording section 240 transmissions data freshness conduct lower than the data freshness of record before being right after the error part, and makes recording section 240 in the error data freshness that partial record sent.
Therefore, when judging the generation error, jump recording section 350 can make recording section 240 records show that the error on tape storage medium 80 partly keeps the value of old invalid data.
Should be noted that, recording section 350 uses than being right after the error data freshness that partly the data freshness of record is low before as the value that will be recorded in the error partly although jump in this embodiment, and the value that is recorded in the part of slipping up is not limited only to this.For example, the data pattern that jump recording section 350 can be recording scheduled in the error part.For example, can to write down such as expression among Fig. 2 be not the value of the isolation symbol 510 of valid data to jump recording section 350.Jump recording section 350 can write down based on the DDS of LTO standard (data-signal is isolated symbol) as isolating symbol 510.
Fig. 8 is the flow chart about the fc tape storage device FC 10 in second change.Write greenness determination part 330 and judge whether write the data freshness is wrong (S710).(S710, not), fc tape storage device FC 10 is carried out normal write operations (S720) when to write the data freshness be not wrong.
Then, when judgement when to write the data freshness be wrong (S710 is), the operation below fc tape storage device FC 10 repeats.Recording section 240 record data and the data freshness (S730) that is associated with these data.More particularly, recording section 240 uses and will be confirmed as the wrong initial value of data freshness as the data freshness that write.Alternatively, recording section 240 can use copy to write the data freshness.Recording section 240 journal data freshness then are so that the data freshness is based on the dull non-decreasing in the position on the tape.Should be noted that recording section 240 can use the initial value of predetermined value as the data freshness.Then, recording section 240 judges whether finished the data (S735) that will write.(S735, not), judgement part 340 is not judged whether slip up (S740) in the record of data when judgement is also finished the data that will write.When in the record of judging in data error taking place, jump recording section 350 writes and shows that the error part keeps the preassigned pattern (S750) of old invalid data.
By this way, operate by extra executive logging on the error part, can write down new data and itself and the legacy data that is recorded in the error part are distinguished, and need not to read error partial data freshness according to the fc tape storage device FC 10 of this change.
Fig. 9 illustrates the hardware configuration example according to the fc tape storage device FC 10 of the invention described above any embodiment and corrigendum.Fc tape storage device FC 10 comprises magnetic tape drive unit 20 and control unit 30.The function of control unit 30 can be by comprising that CPU 800, ROM 802, RAM 804, communication interface (communication I/F) 806 and the cooperation of the computer of the program of execution on computers realize.
The program that realizes control unit 30 comprises and writes greenness determination module, determination module and jump logging modle.These modules are that to make computer run be to write greenness determination part 300, judge part 310, jump recording section 320, write greenness determination part 330, judge the program of part 340 and jump recording section 350.
Said procedure or module can be stored on the exterior storage medium.For storage medium, can use disk 812 or CD-ROM 810, and such as the optical recording media of DVD or PD, such as MD Magnetooptic recording medium, tape-shaped medium's, such as semiconductor memory of IC-card etc.The program that is stored on any these storage mediums offers control unit 30 via the server that is connected to control unit 30 by network etc.In addition, also can be used as recording medium such as being installed in the hard disk that is connected in dedicated communications network or the server on the internet etc. or the memory device of RAM, and program can offer control unit 30 by network.
As mentioned above, when data freshness defectiveness, and meanwhile, when in data record error taking place, fc tape storage device FC 10 is carried out such as the operation of reading and writing on magnetic tape recording medium, and ignores the error part thus.For example, fc tape storage device FC 10 high data freshness of record ratio error partial data freshness before being right after the error part.Then, use than the high data freshness of error partial data freshness, fc tape storage device FC 10 is skipped the error part and is continued record data.In this case, fc tape storage device FC 10 can make and be right after error part data freshness before than error partial data freshness height.Therefore, even judge that the data freshness use is wrong in overriding record, fc tape storage device FC 10 also can make the error part of the data that reservation write down distinguish with new data.
In addition, fc tape storage device FC 10 is carried out the recording operation in the narrow zone of above-mentioned error part that is limited in tape for example and peripheral region thereof.Thus, fc tape storage device FC 10 can be ignored error effectively and proceed record.
According to the foregoing description, following every fc tape storage device FC, control unit, control method, program and recording medium have been realized.
The fc tape storage device FC of (item 1) a kind of journal data, comprise: recording section, the new data that is used for and will new record is explicitly in magnetic tape recording medium identifying recording layer freshness, and the data freshness has how new information for the expression new data with respect to the legacy data that has write down; Judge part, be used for judging whether the record on magnetic tape recording medium that recording section is carried out slips up; Reading section is used for reading error part freshness when taking place to slip up when judging, described error part freshness is the error partial data freshness on the magnetic tape recording medium; And the jump recording section, be used to make recording section to be right after the error part high data freshness of record ratio error part freshness before.
(item 2) is according to item 1 described fc tape storage device FC, wherein, be right after before generation is slipped up in judgement and slip up when partly recorded data freshness ratio error part freshness is high before, the jump recording section keeps the generation of slipping up without change and is right after before the part recorded data freshness before of slipping up.
(item 3) is according to item 1 described fc tape storage device FC, wherein, the jump recording section uses to be equal to or higher than and is right after the data freshness of the data freshness of firm record before of slipping up partly, is right after partial continuous record data and data freshness after slipping up partly on magnetic tape recording medium.
(item 4) is according to item 1 described fc tape storage device FC, wherein, when data are the final data of recording section journal, reading section reads in the data freshness of front, the position presumptive area of the final data that writes down on the magnetic tape recording medium, and the jump recording section makes recording section write down the data freshness higher than the data freshness of presumptive area associated with the dataly.
(item 5) according to item 1 described fc tape storage device FC, also comprises: obtain part, obtain from magnetic tape recording medium and write the data freshness, said write data freshness is the data freshness of using when the enterprising line item of magnetic tape recording medium; And write the greenness determination part, be used to judge whether write the data freshness is wrong, wherein, write under the situation that the data freshness is a mistake in judgement, when judging the generation error, reading section reads the error part freshness as the partial data freshness of slipping up in the record on magnetic tape recording medium, and the jump recording section makes recording section be right after the error part high data freshness of record ratio error part freshness before.
The fc tape storage device FC of (item 6) a kind of journal data, comprise: recording section, the new data that is used for and will new record is explicitly in magnetic tape recording medium identifying recording layer freshness, and the data freshness has how new information for the expression new data with respect to the legacy data that has write down; Judge part, be used for judging whether the record on magnetic tape recording medium that recording section is carried out slips up; And the jump recording section, being used for making value of recording section records when judging when taking place to slip up, this value shows that the error at magnetic tape recording medium partly keeps old invalid data.
(item 7) according to item 6 described fc tape storage device FCs, wherein, the jump recording section is in the data freshness low data freshness of error partial record than record before being right after the error part.
(item 8) according to item 6 described fc tape storage device FCs, also comprises reading section, is used for reading when judging that error takes place error part freshness, and the part of slipping up freshness is error partial data freshness; Wherein, according to described error part freshness, the jump recording section makes recording section records show that data are with the data freshness that is written except that the error part.
(item 9) according to item 1 to 8 any described fc tape storage device FC, wherein, fc tape storage device FC is based on the tape drive of LTO standard, and magnetic tape recording medium is based on the magnetic tape recording medium of LTO standard.
(item 10) a kind of control unit that is used to control the magnetic tape drive unit, described magnetic tape drive unit comprises the new data that is used for and will the new record recording section of journal data freshness on magnetic tape recording medium explicitly, and the reading section that is used for the reading of data freshness, the data freshness has how new information for the expression new data with respect to the legacy data that has write down, described control unit comprises: judge part, be used for judging whether the record on magnetic tape recording medium that recording section is carried out slips up, and make reading section read error part freshness when taking place to slip up when judging, described error part freshness is the error partial data freshness on the magnetic tape recording medium; And the jump recording section, be used to make recording section to be right after the error part high data freshness of record ratio error part freshness before.
(item 11) a kind of control unit that is used to control the magnetic tape drive unit, described magnetic tape drive unit comprises that the new data that is used for and will new record is explicitly in the recording section of magnetic tape recording medium identifying recording layer freshness and the reading section that is used for the reading of data freshness, the data freshness has how new information for the expression new data with respect to the legacy data that has write down, described control unit comprises: judge part, be used for judging whether the record on magnetic tape recording medium that recording section is carried out slips up; And the jump recording section, being used for making value of recording section records when judging when taking place to slip up, this value shows that the error at magnetic tape recording medium partly keeps old invalid data.
The control method of the fc tape storage device FC of (item 12) a kind of control sequence record data, described method comprises step: with new data that will new record explicitly in magnetic tape recording medium identifying recording layer freshness, the data freshness has how new information for the expression new data with respect to the legacy data that has write down; Whether slip up in the record of judgement on magnetic tape recording medium; Read error part freshness when taking place to slip up when judging, described error part freshness is the error partial data freshness on the magnetic tape recording medium; And write down than the high data freshness of error part freshness before being right after the error part.
The control method of the fc tape storage device FC of (item 13) a kind of control sequence record data, described method comprises step: with new data that will new record explicitly in magnetic tape recording medium identifying recording layer freshness, the data freshness has how new information for the expression new data with respect to the legacy data that has write down; Whether slip up in the record of judgement on magnetic tape recording medium; And when judging the generation error, writing down a value, this value shows that the error at magnetic tape recording medium partly keeps old invalid data.
(item 14) according to item 12 or 13 described control methods, wherein, fc tape storage device FC is based on the tape drive of LTO standard, and magnetic tape recording medium is based on the magnetic tape recording medium of LTO standard.
The program of (item 15) a kind of control fc tape storage device FC that uses a computer, described fc tape storage device FC journal data, described program makes computer realization: with new data that will new record explicitly in the function of magnetic tape recording medium identifying recording layer freshness, the data freshness has how new information for the expression new data with respect to the legacy data that has write down; The function of whether slipping up in the record of judgement on magnetic tape recording medium; When judging the function that reads error part freshness when taking place to slip up, described error part freshness is the error partial data freshness on the magnetic tape recording medium; And the function that is right after the error part data freshness that record is higher than error part freshness before.
The program of (item 16) a kind of control fc tape storage device FC that uses a computer, described fc tape storage device FC journal data, described program makes computer realization: with new data that will new record explicitly in the function of magnetic tape recording medium identifying recording layer freshness, the data freshness has how new information for the expression new data with respect to the legacy data that has write down; The function of whether slipping up in the record of judgement on magnetic tape recording medium; And when judging the function that writes down a value when taking place to slip up, this value shows that the error at magnetic tape recording medium partly keeps old invalid data.
(item 17) according to item 15 or 16 described programs, wherein, fc tape storage device FC is based on the tape drive of LTO standard, and magnetic tape recording medium is based on the magnetic tape recording medium of LTO standard.
(item 18) a kind of recording medium, storage uses a computer and controls the program of fc tape storage device FC, described fc tape storage device FC journal data, described program makes computer realization: with new data that will new record explicitly in the function of magnetic tape recording medium identifying recording layer freshness, the data freshness has how new information for the expression new data with respect to the legacy data that has write down; The function of whether slipping up in the record of judgement on magnetic tape recording medium; When judging the function that reads error part freshness when taking place to slip up, described error part freshness is the error partial data freshness on the magnetic tape recording medium; And the function that is right after the error part data freshness that record is higher than error part freshness before.
(item 19) a kind of recording medium, storage uses a computer and controls the program of fc tape storage device FC, described fc tape storage device FC journal data, described program makes computer realization: with new data that will new record explicitly in the function of magnetic tape recording medium identifying recording layer freshness, the data freshness has how new information for the expression new data with respect to the legacy data that has write down; The function of whether slipping up in the record of judgement on magnetic tape recording medium; And when judging the function that writes down a value when taking place to slip up, this value shows that the error at magnetic tape recording medium partly keeps old invalid data.
(item 20) according to item 18 or 19 described recording mediums, wherein, fc tape storage device FC is based on the tape drive of LTO standard, and magnetic tape recording medium is based on the magnetic tape recording medium of LTO standard.
Though use specific embodiment to describe the present invention, technical scope of the present invention is not limited only to described in these embodiments scope.Can carry out various replacements or change to the foregoing description.Obviously as can be seen, these replacements done or change all are included in the technical scope of the present invention from the scope that claims are described.
From top description, as can be seen,, can ignore error in the recording process on magnetic tape recording medium according to the present invention.
Claims (11)
1. the fc tape storage device FC of journal data comprises:
Recording section, be used for new data that will new record explicitly at magnetic tape recording medium identifying recording layer freshness and described new data, described data freshness has how new information for the expression new data with respect to the legacy data that has write down;
Judge part, whether the record of the data on magnetic tape recording medium that are used for judging that recording section is carried out slips up; And
Reading section is used for reading error part freshness when taking place to slip up when judging, described error part freshness is the error partial data freshness on the magnetic tape recording medium;
Wherein, described judgement part is used to judge whether be right after error part data freshness before is higher than the part freshness of slipping up,
Described fc tape storage device FC also comprises:
The jump recording section, be used for when judging that data freshness before being right after the error part is not higher than error part freshness, making recording section be right after the error part before record than the high data freshness of error part freshness,
Wherein, the jump recording section uses to be equal to or higher than and is right after the data freshness of the data freshness of firm record before of slipping up partly, is right after partial continuous record data and data freshness after slipping up partly on magnetic tape recording medium.
2. fc tape storage device FC according to claim 1, wherein, be right after before generation is slipped up in judgement and slip up when partly recorded data freshness ratio error part freshness is high before, the jump recording section keeps the generation of slipping up without change and is right after before the part recorded data freshness before of slipping up.
3. fc tape storage device FC according to claim 1,
Wherein, when data were the final data of recording section journal, reading section read in the data freshness of front, the position presumptive area of the final data that writes down on the magnetic tape recording medium; And
The jump recording section makes recording section write down the data freshness higher than the data freshness of presumptive area associated with the dataly.
4. fc tape storage device FC according to claim 1 also comprises:
Obtain part, obtain from magnetic tape recording medium and write the data freshness, said write data freshness is the data freshness of using when the enterprising line item of magnetic tape recording medium; And
Write the greenness determination part, be used to judge whether write the data freshness is wrong,
Wherein, write under the situation that the data freshness is a mistake in judgement,
When judging the generation error, reading section reads the error part freshness as error partial data freshness in the record on magnetic tape recording medium,
The jump recording section makes recording section be right after the error part high data freshness of record ratio error part freshness before.
5. according to the arbitrary described fc tape storage device FC of claim 1 to 4, wherein, fc tape storage device FC is based on the tape drive of LTO standard, and magnetic tape recording medium is based on the magnetic tape recording medium of LTO standard.
6. the fc tape storage device FC of journal data comprises:
Recording section, be used for new data that will new record explicitly at magnetic tape recording medium identifying recording layer freshness and described new data, described data freshness has how new information for the expression new data with respect to the legacy data that has write down;
Judge part, whether the record of the data on magnetic tape recording medium that are used for judging that recording section is carried out slips up; And
The jump recording section is used for making recording section value of record in the error part of magnetic tape recording medium when error takes place the record of decision data, this value shows that the error at magnetic tape recording medium partly keeps old invalid data;
Wherein, the jump recording section is being slipped up partial record than the low data freshness of data freshness of record before being right after the error part,
Wherein, the jump recording section uses to be equal to or higher than and is right after the data freshness of the data freshness of firm record before of slipping up partly, is right after partial continuous record data and data freshness after slipping up partly on magnetic tape recording medium.
7. fc tape storage device FC according to claim 6 also comprises reading section, is used for reading when error takes place the record of decision data error part freshness, and error part freshness is error partial data freshness;
Wherein, according to described error part freshness, the jump recording section makes recording section records show that data are with the data freshness that is written except that the error part.
8. according to the arbitrary described fc tape storage device FC of claim 6 to 7, wherein, fc tape storage device FC is based on the tape drive of LTO standard, and magnetic tape recording medium is based on the magnetic tape recording medium of LTO standard.
9. control unit that is used to control the magnetic tape drive unit, described magnetic tape drive unit comprises the new data that is used for and will the new record recording section of journal data freshness and described new data and the reading section that is used for the reading of data freshness on magnetic tape recording medium explicitly, the data freshness has how new information for the expression new data with respect to the legacy data that has write down, and described control unit comprises:
Judge part, whether the record that is used for judging the data on magnetic tape recording medium that recording section is carried out slips up, and make reading section read error part freshness when taking place to slip up when judging, described error part freshness is the error partial data freshness on the magnetic tape recording medium, wherein, described judgement part is used to judge whether be right after error part data freshness before is higher than the part freshness of slipping up; And
The jump recording section, be used for when judging that data freshness before being right after the error part is not higher than error part freshness, making recording section be right after the error part before record than the high data freshness of error part freshness,
Wherein, the jump recording section uses to be equal to or higher than and is right after the data freshness of the data freshness of firm record before of slipping up partly, is right after partial continuous record data and data freshness after slipping up partly on magnetic tape recording medium.
10. the control method of the fc tape storage device FC of control sequence record data, described method comprises step:
With new data that will new record explicitly at magnetic tape recording medium identifying recording layer freshness and described new data, the data freshness has how new information for the expression new data with respect to the legacy data that has write down;
Whether slip up in the record of the data of judgement on magnetic tape recording medium;
Read error part freshness when taking place to slip up when judging, described error part freshness is the error partial data freshness on the magnetic tape recording medium; And
Write down than the high data freshness of error part freshness before being right after the error part,
Use is equal to or higher than the data freshness of the data freshness that being right after slips up has partly just write down before, is right after partial continuous record data and data freshness after slipping up partly on magnetic tape recording medium.
11. control method according to claim 10, wherein, fc tape storage device FC is based on the tape drive of LTO standard, and magnetic tape recording medium is based on the magnetic tape recording medium of LTO standard.
Applications Claiming Priority (3)
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| JP100863/2002 | 2002-04-03 | ||
| JP2002100863 | 2002-04-03 | ||
| PCT/JP2003/001516 WO2003083866A1 (en) | 2002-04-03 | 2003-02-13 | Tape recording apparatus, control apparatus, control method, program, and recording medium |
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| CN1643606A CN1643606A (en) | 2005-07-20 |
| CN1643606B true CN1643606B (en) | 2010-06-30 |
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| US7443624B2 (en) * | 2002-04-03 | 2008-10-28 | International Business Machines Corporation | Method for recording data freshness degrees by a tape drive |
| GB2412226A (en) | 2004-03-20 | 2005-09-21 | Hewlett Packard Development Co | Detecting tampering with write once tapes using write pass counts |
| CN101395568A (en) * | 2006-03-03 | 2009-03-25 | 国际商业机器公司 | Read device for processing a read error, system, its method, and program |
| JP5473269B2 (en) | 2008-07-16 | 2014-04-16 | インターナショナル・ビジネス・マシーンズ・コーポレーション | Apparatus and method for reading data recorded on tape medium |
| US8416663B2 (en) | 2008-11-21 | 2013-04-09 | International Business Machines Corporation | Overwrite control for data in a tape recording apparatus |
| US8760781B2 (en) * | 2012-05-07 | 2014-06-24 | International Business Machines Corporation | System utility for controling data synchronization in a tape data storage system |
| JP2014115807A (en) | 2012-12-10 | 2014-06-26 | International Business Maschines Corporation | Method for writing file into a plurality of media and storage system |
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| US6282040B1 (en) * | 1998-02-12 | 2001-08-28 | Hewlett-Packard Company | Write pass identifier |
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| JP2563466B2 (en) * | 1988-04-15 | 1996-12-11 | 松下電器産業株式会社 | Digital signal recording / reproducing device |
| JPH0444688A (en) * | 1990-06-12 | 1992-02-14 | Ricoh Co Ltd | Optical disk driving device |
| JPH04307476A (en) * | 1991-04-05 | 1992-10-29 | Nec Corp | Magnetic tape device |
| JPH076572A (en) * | 1993-06-15 | 1995-01-10 | Matsushita Electric Ind Co Ltd | Tape recording and reproducing method |
| WO1997027703A1 (en) * | 1996-01-26 | 1997-07-31 | Exabyte Corporation | Multipurpose digital recording method and apparatus and media therefor |
| EP0936618A3 (en) * | 1998-02-12 | 2005-04-13 | Hewlett-Packard Company, A Delaware Corporation | Write pass identifier |
| US6532128B1 (en) * | 1999-05-19 | 2003-03-11 | International Business Machines Corporation | Data set to recording media registration and synchronization |
| US6288862B1 (en) * | 1999-07-30 | 2001-09-11 | Storage Technology Corporation | Method and mechanism to distinguish valid from outdated recording blocks in a tape drive |
| JP4247650B2 (en) * | 2000-03-08 | 2009-04-02 | ソニー株式会社 | Magnetic recording / reproducing apparatus and bad spot processing method |
| US6883122B2 (en) * | 2001-07-31 | 2005-04-19 | Hewlett-Packard Development Company, L.P. | Write pass error detection |
| US6693755B2 (en) * | 2001-07-31 | 2004-02-17 | Hewlett-Packard Development Company, L.C. | Data storage |
| US7443624B2 (en) * | 2002-04-03 | 2008-10-28 | International Business Machines Corporation | Method for recording data freshness degrees by a tape drive |
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2003
- 2003-02-13 US US10/508,872 patent/US7443624B2/en not_active Expired - Fee Related
- 2003-02-13 CN CN038074796A patent/CN1643606B/en not_active Expired - Fee Related
- 2003-02-13 JP JP2003581200A patent/JP3813153B2/en not_active Expired - Fee Related
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- 2003-02-13 AT AT03705135T patent/ATE472155T1/en not_active IP Right Cessation
- 2003-02-13 KR KR1020047015271A patent/KR100734819B1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6282040B1 (en) * | 1998-02-12 | 2001-08-28 | Hewlett-Packard Company | Write pass identifier |
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| US7443624B2 (en) | 2008-10-28 |
| JP3813153B2 (en) | 2006-08-23 |
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| CN1643606A (en) | 2005-07-20 |
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| WO2003083866A1 (en) | 2003-10-09 |
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| JPWO2003083866A1 (en) | 2005-08-04 |
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